Last time we received something similar to this it was on Apple's end and we just needed to wait it out for a day. Is anyone else hitting a similar problem right now?
We only made some small style updates so we're having a hard time thinking that it is something in our build.
Dear Developer, We identified one or more issues with a recent delivery for your app, "Shmoody: Improve Your Mood" 2.2.24 (210219). Please correct the following issues, then upload again. ITMS-90338: Non-public API usage - The app references non-public selectors in Shmoody: _isKeyDown, _modifiedInput, _modifierFlags, isPassthrough, onSuccess:, removeValuesForKeys:completion:, setHighlightsToday:, viewManager. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed. For further information, visit the Technical Support Information at http://developer.apple.com/support/technical/ Best regards, The App Store Team